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Patented Sept. 5

C P RICH ,DENTAL PLUGGB'R.

` UNITED STATES vm alletcase,

PATENT @Erica cYEUs F. Eton, or sAnAroeA senINes, NEW YORK.

DENTAL PLUGGER.

SPECIFICATIQN forming part of Letters Patent No. 263,960, dated September 5, 1882. Application inea May 29, rss2. No modell) To all whom it may concern:

Be it known that I, Dr. GYRUS F. RICH, of Saratoga Springs, in the countyof Saratoga and State of New York, have invented certain new and useful Improvements in Dental Pluggers; and I do hereby declare that the following is a full, clear, and'exact description thereot, reference being had to the accompanying drawings, and to the letters of reference m arked thereon, which form part of this specification, in which- Figure l is a side view. Fig. 2 is a central longitudinal section. Fig.3 is an enlarged section ofthe diaphragm-case, and Fig. 4 is a cross-section ofthe tube or barrel, showing the ham mer-head.

This invention relates to dental or toothplugging instruments; and the nature of my invention consists in certain novel combinations of parts, whereby compressed air can be usefully and practically employed as a prime motor for a piston or hammer working in a tube or barrel and acting on a plunger or rod adapted to receive a plugging-tool, as will be fully understood from the -accompanying description when taken in connection with the annexed d rawings.

, The letter A designates a tube'or barrel,

which may be made of any suitable material and ofany desired diameter or length. 0n" one end of this tube or barrel A is adjnstably applied a mallet-case, B, which is preferably adjustable by means of a screw-threaded tenon, outside of which isa. tube inclosing the lower extremity of the tube or barrel A, so that the joint is airtight. This malletcase B is bored out to receive a stem, C, which is adjustable by means of a screw, and the stem O is also bored out to receive a mallet-rod, D, and the socketed head E, into which latter may be inserted any suitable dental tool.

Between the inner end ofthe adjustable stem C and a collar formed on the mallet-rod D is a helical spring, F, which operates to retract the mallet-rod D after each blow given to it by the means hereinafter explained.

Instead ot' the spring F and the collar a, lo-` cated in the space formed between the end of the stem C and the inner end of the socket ot' the as shown in Fig. 2, the spring and collar may be arranged inside of the tube or barrel A.

G designates a hammer-head or plunger', which is scored longitudinally, as shown in Figs. 3 and 4, and adapted to slide freely and truly inside of the barrel A. This hammerbead is secured to a rod, H, which is attached, by means of the grooved head p and a tie, J, or other suitable means, to a diaphragm, K, made ot' rubber or other which is air-proof and forms an airtight chamber. The diaphragm K is secured to a case, L, which is preferably applied to swivel on the barrel A, and to this case an air-forcing pump or lexible hand-bulb, M, is suitably attached. The case L is perforated at b b for the purpose of allowing the entrance of air when there is an exhaustion -behind the plunger or hammerhead.

It will be seen from the above description that I have a portable compact hand tooth-plugger which contains within itself an air engine or bulb, and that the plugging-instrument fixed in the head E can be given any desired blow by a simple pressure ofthe hand on the bulb M. It will C are both adjustable for the purpose of regulating the blow ofthe hammer, so that by a very slight effort the most delicate blow may be produced. Other means may be employed for effecting this object.

In some instances I shall connect the case L to an air-forcing engine by means of a long iiexible tube.

I may use, instead of air, for actuating the plunger.

I may also use a diaphragm the central part of which is rigid and the external part or margin flexible, but I prefer a diaphragm made entirely of rubber, as above described, and secured to a grooved head, p, as described.

I claim as my invention 1. The combination of the grooved head p on the plunger-rod, the diaphragm drawn over one end of this head, and the tie J, for binding the diaphragm to the head, substantially as described.

2. The combination ofthe rigid bulb L, the flexible diaphragm therein, secured to the grooved head p by a binder, j, the rod H, the grooved plunger G, case A, and a plugging device, substantially in the manner andfor the purposes described.

3. The dental tooth-plugger consisting steam or electricity liexible substance,

also be seen that the parts B andthe foilowingelements'in combination: a lexi- In testimony vthat I claim the foregoing as ble hand-bulb, a flexible diaphragm, a sectional my own I affix my signature in presen ce of two Io oase, I1, iu which said diaphragm is confined, Witnesses.

a head, J, confined to said diaphragm, a rod, i

H, a rugated piston inoiosed in a tube, A, and CYRUS F' RICH' adentai plugging-instrument, all arranged and Witnesses constructed in the manner and for the' pur- PHINEAS F. ALLEN,

poses set forth. 1 WATSON E. PHELIS. 

